Abstract:
An elongated rod assembly (40) is made by preparing a plurality of rods (42). Each rod (42) is prepared by the steps of furnishing at least one nonmetallic precursor compound, thereafter chemically reducing the precursor compounds to produce the metallic material, and thereafter consolidating the metallic material to form the rod (42), wherein the rod (42) has a rod length equal to the assembly length. The rods (42) are bundled together to form a bundled rod assembly (40). The rod assembly (40) may be used as a consumable feedstock in a melting-and-casting operation.
Abstract:
An elongated rod assembly (40) is made by preparing a plurality of rods (42). Each rod (42) is prepared by the steps of furnishing at least one nonmetallic precursor compound, thereafter chemically reducing the precursor compounds to produce the metallic material, and thereafter consolidating the metallic material to form the rod (42), wherein the rod (42) has a rod length equal to the assembly length. The rods (42) are bundled together to form a bundled rod assembly (40). The rod assembly (40) may be used as a consumable feedstock in a melting-and-casting operation.
Abstract:
A process for detecting an aluminum-based material deposited onto a titanium-based gas turbine engine component during engine operation is disclosed. The process comprises immersing at least a portion of the titanium-based component, which has been subjected to engine operation, into an acid solution to form an etched component. The acid solution comprises sodium fluoride, sulphuric acid and water. The etched component may then be removed from the solution and visually inspected for dark areas in contrast to light areas, the dark areas indicating deposited aluminum-based material.
Abstract:
A titanium-alloy article (40) is produced by providing a workpiece of an alpha-beta titanium alloy having a beta-transus temperature, and thereafter mechanically working the workpiece at a mechanical-working temperature above the beta-transus temperature. The mechanically worked workpiece is solution heat treated at a solution-heat-treatment temperature of from about 79.5°C (175°F) below the beta-transus temperature to about -3.9°C (25°F) below the beta-transus temperature, quenched, overage heat treated at an overage-heat-treatment temperature of from about 204.5°C (400°F) below the beta-transus temperature to about 135°C (275°F) below the beta-transus temperature, and cooled from the overage-heat-treatment temperature.
Abstract:
An elongated rod assembly (40) is made by preparing a plurality of rods (42). Each rod (42) is prepared by the steps of furnishing at least one nonmetallic precursor compound, thereafter chemically reducing the precursor compounds to produce the metallic material, and thereafter consolidating the metallic material to form the rod (42), wherein the rod (42) has a rod length equal to the assembly length. The rods (42) are bundled together to form a bundled rod assembly (40). The rod assembly (40) may be used as a consumable feedstock in a melting-and-casting operation.
Abstract:
A rotor assembly for a turbine is provided. The rotor assembly includes a first portion (210) of a rotor component forged from a first material. The first material is processed using a first process. The rotor assembly also includes a second portion (230) of the rotor component separately forged from a second material that is the same material as the first material. The second portion is processed using a second process and is coupled to the first portion at a first axial position. A method for fabricating a rotor assembly for a turbine is also provided.
Abstract:
An elongated rod assembly (40) is made by preparing a plurality of rods (42). Each rod (42) is prepared by the steps of furnishing at least one nonmetallic precursor compound, thereafter chemically reducing the precursor compounds to produce the metallic material, and thereafter consolidating the metallic material to form the rod (42), wherein the rod (42) has a rod length equal to the assembly length. The rods (42) are bundled together to form a bundled rod assembly (40). The rod assembly (40) may be used as a consumable feedstock in a melting-and-casting operation.
Abstract:
A titanium-alloy article (40) is produced by providing a workpiece of an alpha-beta titanium alloy having a beta-transus temperature, and thereafter mechanically working the workpiece at a mechanical-working temperature above the beta-transus temperature. The mechanically worked workpiece is solution heat treated at a solution-heat-treatment temperature of from about 175°F below the beta-transus temperature to about 25°F below the beta-transus temperature, quenched, overage heat treated at an overage-heat-treatment temperature of from about 400°F below the beta-transus temperature to about 275°F below the beta-transus temperature, and cooled from the overage-heat-treatment temperature.
Abstract:
An elongated rod assembly (40) is made by preparing a plurality of rods (42). Each rod (42) is prepared by the steps of furnishing at least one nonmetallic precursor compound, thereafter chemically reducing the precursor compounds to produce the metallic material, and thereafter consolidating the metallic material to form the rod (42), wherein the rod (42) has a rod length equal to the assembly length. The rods (42) are bundled together to form a bundled rod assembly (40). The rod assembly (40) may be used as a consumable feedstock in a melting-and-casting operation.